SOLUTION: A jar contains 10 red marbles numbered 1 to 10 and 3 blue marbles numbered 1 to 3. A marble is drawn at random from the jar. Find the probability that the marble is red or even-num

Algebra ->  Probability-and-statistics -> SOLUTION: A jar contains 10 red marbles numbered 1 to 10 and 3 blue marbles numbered 1 to 3. A marble is drawn at random from the jar. Find the probability that the marble is red or even-num      Log On


   

Question 1048099: A jar contains 10 red marbles numbered 1 to 10 and 3 blue marbles numbered 1 to 3. A marble is drawn at random from the jar. Find the probability that the marble is red or even-numbered.
Answer by chen.aavaz(62) About Me  (Show Source):
You can put this solution on YOUR website!
Requested probability = 1- (probability marble is blue AND odd-numbered).
Probability marble is blue AND odd-numbered = 2/13 (only the blue marbles with numbers 1 and 3).
Thus the requested probability is P:
P+=+1-2%2F13+=+11%2F13